http://www.beachoven.com/the-portable-solar-cooking-is-coming-soon.html Cooking On The Beach And Outdoor BBQ Cooking Sat, 10 Oct 2009 11:57:38 -0400 http://wordpress.org/?v=2.8.4 hourly 1 http://www.beachoven.com/the-portable-solar-cooking-is-coming-soon.html/comment-page-1#comment-324 mike1942f Sun, 03 May 2009 04:09:09 +0000 http://www.beachoven.com/the-portable-solar-cooking-is-coming-soon.html#comment-324 To cook, you want materials that reflect heat first, so that you can reflect the sun from over an area into a small space. Fifty years ago, I used silvery reflective tape on a metal acoustic parabolic disk to create a hot spot for cooking hot dogs (an inch at a time.) Since that time absorbtive finishes for solar water panels mean that an insulated chamber with a dark metal side will absorb more heat from the sun shining on it, but you still need 8-10 square feet of reflector to heat the box to cooking temps, and good dark glasses to withstand the glare. To cook, you want materials that reflect heat first, so that you can reflect the sun from over an area into a small space. Fifty years ago, I used silvery reflective tape on a metal acoustic parabolic disk to create a hot spot for cooking hot dogs (an inch at a time.)
Since that time absorbtive finishes for solar water panels mean that an insulated chamber with a dark metal side will absorb more heat from the sun shining on it, but you still need 8-10 square feet of reflector to heat the box to cooking temps, and good dark glasses to withstand the glare.

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